Requirements of certain media for reciprocating compressor cylinders

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Requirements of certain media for reciprocating compressor cylinders: 1. API617-2022 stipulates that the buyer should specify the composition of the compressed gas, including in particular those media that may cause corrosion. These include hydrogen sulfide, amines, chlorides, fluorides, polysulfides, etc. 2. The selection of materials is the joint responsibility of both the buyer and the seller. 3. For pressure vessels, the materials must be fully hardened, normalized, and have a fine grain structure. This steel is characterized by few oxide inclusions and high purity, which gives it better mechanical properties and workability. 4. If the compressor is used to compress flammable or toxic gases, its casing should be made of steel, rather than cast iron or ductile iron. 5. The corrosion allowance for the shell must be at least 3 mm (the material of the shell is not specified; in other words, even if it is made of stainless steel, the corrosion allowance should still be 3 mm). Of course, the seller can also propose a recommended corrosion allowance if the shell has particularly good corrosion resistance.